65172630140 has 24 divisors (see below), whose sum is σ = 136911191760. Its totient is φ = 26059781888.

The previous prime is 65172630137. The next prime is 65172630143. The reversal of 65172630140 is 4103627156.

It is an interprime number because it is at equal distance from previous prime (65172630137) and next prime (65172630143).

It is a self number, because there is not a number n which added to its sum of digits gives 65172630140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65172630143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521597 + ... + 634356.

It is an arithmetic number, because the mean of its divisors is an integer number (5704632990).

Almost surely, 2^65172630140 is an apocalyptic number.

It is an amenable number.

65172630140 is an abundant number, since it is smaller than the sum of its proper divisors (71738561620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65172630140 is a wasteful number, since it uses less digits than its factorization.

65172630140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158781 (or 1158779 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 65172630140 in words is "sixty-five billion, one hundred seventy-two million, six hundred thirty thousand, one hundred forty".